Final answer:
Arthur is a forensic accountant, a type of public accountant who investigates financial documents for fraud and financial misconduct.
Step-by-step explanation:
Arthur is public accountant who specializes in analyzing financial documents for signs of fraudulent activity and financial misconduct. Based on this description, Arthur's role aligns with that of a forensic accountant.
Forensic accountants are often likened to detectives due to their investigative nature of work, which involves digging through financial records to uncover potential wrongdoings such as fraud, embezzlement, laundering, and other financial crimes.